vout_subpictures.c 51.1 KB
Newer Older
Sam Hocevar's avatar
 
Sam Hocevar committed
1 2 3
/*****************************************************************************
 * vout_subpictures.c : subpicture management functions
 *****************************************************************************
4
 * Copyright (C) 2000-2007 the VideoLAN team
5
 * $Id$
Sam Hocevar's avatar
 
Sam Hocevar committed
6 7 8
 *
 * Authors: Vincent Seguin <seguin@via.ecp.fr>
 *          Samuel Hocevar <sam@zoy.org>
9
 *          Gildas Bazin <gbazin@videolan.org>
Sam Hocevar's avatar
 
Sam Hocevar committed
10 11 12 13 14 15 16 17 18 19 20 21 22
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
Antoine Cellerier's avatar
Antoine Cellerier committed
23
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
Sam Hocevar's avatar
 
Sam Hocevar committed
24 25 26 27 28
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
29
#include <vlc/vlc.h>
Clément Stenac's avatar
Clément Stenac committed
30 31 32 33
#include <vlc_vout.h>
#include <vlc_block.h>
#include <vlc_filter.h>
#include <vlc_osd.h>
34

35 36 37 38 39 40
/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
static void UpdateSPU   ( spu_t *, vlc_object_t * );
static int  CropCallback( vlc_object_t *, char const *,
                          vlc_value_t, vlc_value_t, void * );
41

42 43
static int spu_vaControlDefault( spu_t *, int, va_list );

44 45
static subpicture_t *sub_new_buffer( filter_t * );
static void sub_del_buffer( filter_t *, subpicture_t * );
46 47
static subpicture_t *spu_new_buffer( filter_t * );
static void spu_del_buffer( filter_t *, subpicture_t * );
48 49
static picture_t *spu_new_video_buffer( filter_t * );
static void spu_del_video_buffer( filter_t *, picture_t * );
50

51 52 53 54 55
static int spu_ParseChain( spu_t * );
static void spu_DeleteChain( spu_t * );
static int SubFilterCallback( vlc_object_t *, char const *,
                              vlc_value_t, vlc_value_t, void * );

56 57 58 59 60 61
struct filter_owner_sys_t
{
    spu_t *p_spu;
    int i_channel;
};

62 63 64 65 66
enum {
    SCALE_DEFAULT,
    SCALE_TEXT,
    SCALE_SIZE
};
67
/**
68
 * Creates the subpicture unit
69
 *
70
 * \param p_this the parent object which creates the subpicture unit
71
 */
72
spu_t *__spu_Create( vlc_object_t *p_this )
73 74
{
    int i_index;
75
    spu_t *p_spu = vlc_object_create( p_this, VLC_OBJECT_SPU );
76 77 78

    for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
    {
79
        p_spu->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
80 81
    }

82 83 84
    p_spu->p_blend = NULL;
    p_spu->p_text = NULL;
    p_spu->p_scale = NULL;
85
    p_spu->i_filter = 0;
86
    p_spu->pf_control = spu_vaControlDefault;
87 88

    /* Register the default subpicture channel */
89
    p_spu->i_channel = 2;
90 91

    vlc_mutex_init( p_this, &p_spu->subpicture_lock );
92

93 94
    vlc_object_attach( p_spu, p_this );

95 96 97 98 99 100 101 102 103 104 105 106
    return p_spu;
}

/**
 * Initialise the subpicture unit
 *
 * \param p_spu the subpicture unit object
 */
int spu_Init( spu_t *p_spu )
{
    vlc_value_t val;

107 108 109
    /* If the user requested a sub margin, we force the position. */
    var_Create( p_spu, "sub-margin", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Get( p_spu, "sub-margin", &val );
110 111 112
    p_spu->i_margin = val.i_int;

    var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
113 114 115 116
    var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );

    spu_ParseChain( p_spu );

117
    return VLC_SUCCESS;
118
}
Antoine Cellerier's avatar
 
Antoine Cellerier committed
119

120 121 122 123 124
int spu_ParseChain( spu_t *p_spu )
{
    char *psz_parser;
    vlc_value_t val;
    var_Get( p_spu, "sub-filter", &val );
125
    psz_parser = val.psz_string;
Antoine Cellerier's avatar
 
Antoine Cellerier committed
126 127

    while( psz_parser && *psz_parser )
128
    {
129
        config_chain_t *p_cfg;
Antoine Cellerier's avatar
 
Antoine Cellerier committed
130 131 132
        char *psz_name;

        psz_parser = config_ChainCreate( &psz_name, &p_cfg, psz_parser );
133

Antoine Cellerier's avatar
 
Antoine Cellerier committed
134
        msg_Dbg( p_spu, "adding sub-filter: %s", psz_name );
135

136 137 138 139 140
        p_spu->pp_filter[p_spu->i_filter] =
            vlc_object_create( p_spu, VLC_OBJECT_FILTER );
        vlc_object_attach( p_spu->pp_filter[p_spu->i_filter], p_spu );
        p_spu->pp_filter[p_spu->i_filter]->pf_sub_buffer_new = sub_new_buffer;
        p_spu->pp_filter[p_spu->i_filter]->pf_sub_buffer_del = sub_del_buffer;
Antoine Cellerier's avatar
Antoine Cellerier committed
141
        p_spu->pp_filter[p_spu->i_filter]->p_cfg = p_cfg;
142 143
        p_spu->pp_filter[p_spu->i_filter]->p_module =
            module_Need( p_spu->pp_filter[p_spu->i_filter],
144
                         "sub filter", psz_name, VLC_TRUE );
145 146 147
        if( p_spu->pp_filter[p_spu->i_filter]->p_module )
        {
            filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
148 149 150 151 152 153 154
            if( p_sys )
            {
                p_spu->pp_filter[p_spu->i_filter]->p_owner = p_sys;
                spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
                p_sys->p_spu = p_spu;
                p_spu->i_filter++;
            }
155
        }
156 157
        else
        {
158
            msg_Dbg( p_spu, "no sub filter found" );
159
            config_ChainDestroy( p_spu->pp_filter[p_spu->i_filter]->p_cfg );
160 161 162
            vlc_object_detach( p_spu->pp_filter[p_spu->i_filter] );
            vlc_object_destroy( p_spu->pp_filter[p_spu->i_filter] );
        }
163 164 165 166 167 168

        if( p_spu->i_filter >= 10 )
        {
            msg_Dbg( p_spu, "can't add anymore filters" );
        }

Antoine Cellerier's avatar
 
Antoine Cellerier committed
169
        free( psz_name );
170
    }
171
    if( val.psz_string ) free( val.psz_string );
172

173
    return VLC_SUCCESS;
174 175 176
}

/**
177
 * Destroy the subpicture unit
178
 *
179
 * \param p_this the parent object which destroys the subpicture unit
180
 */
181
void spu_Destroy( spu_t *p_spu )
182 183 184
{
    int i_index;

185 186
    vlc_object_detach( p_spu );

187 188 189
    /* Destroy all remaining subpictures */
    for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
    {
190
        if( p_spu->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
191
        {
192
            spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
193 194 195
        }
    }

196
    if( p_spu->p_blend )
197
    {
198 199
        if( p_spu->p_blend->p_module )
            module_Unneed( p_spu->p_blend, p_spu->p_blend->p_module );
200

201 202
        vlc_object_detach( p_spu->p_blend );
        vlc_object_destroy( p_spu->p_blend );
203 204
    }

205
    if( p_spu->p_text )
206
    {
207 208
        if( p_spu->p_text->p_module )
            module_Unneed( p_spu->p_text, p_spu->p_text->p_module );
209

210 211
        vlc_object_detach( p_spu->p_text );
        vlc_object_destroy( p_spu->p_text );
212 213
    }

214 215 216 217 218 219 220 221 222
    if( p_spu->p_scale )
    {
        if( p_spu->p_scale->p_module )
            module_Unneed( p_spu->p_scale, p_spu->p_scale->p_module );

        vlc_object_detach( p_spu->p_scale );
        vlc_object_destroy( p_spu->p_scale );
    }

223 224 225 226 227 228 229 230 231
    spu_DeleteChain( p_spu );

    vlc_mutex_destroy( &p_spu->subpicture_lock );
    vlc_object_destroy( p_spu );
}

static void spu_DeleteChain( spu_t *p_spu )
{
    if( p_spu->i_filter )
Rafaël Carré's avatar
Rafaël Carré committed
232
    while( p_spu->i_filter )
233
    {
Rafaël Carré's avatar
Rafaël Carré committed
234
        p_spu->i_filter--;
235 236
        module_Unneed( p_spu->pp_filter[p_spu->i_filter],
                       p_spu->pp_filter[p_spu->i_filter]->p_module );
237
        free( p_spu->pp_filter[p_spu->i_filter]->p_owner );
238
        config_ChainDestroy( p_spu->pp_filter[p_spu->i_filter]->p_cfg );
239 240 241
        vlc_object_detach( p_spu->pp_filter[p_spu->i_filter] );
        vlc_object_destroy( p_spu->pp_filter[p_spu->i_filter] );
    }
242 243 244 245 246
}

/**
 * Attach/Detach the SPU from any input
 *
247
 * \param p_this the object in which to destroy the subpicture unit
248 249
 * \param b_attach to select attach or detach
 */
250
void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, vlc_bool_t b_attach )
251 252 253
{
    vlc_object_t *p_input;

254
    p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
255 256 257
    if( !p_input ) return;

    if( b_attach )
258
    {
259 260
        UpdateSPU( p_spu, VLC_OBJECT(p_input) );
        var_AddCallback( p_input, "highlight", CropCallback, p_spu );
261 262 263 264 265
        vlc_object_release( p_input );
    }
    else
    {
        /* Delete callback */
266
        var_DelCallback( p_input, "highlight", CropCallback, p_spu );
267 268 269 270 271 272 273 274 275 276
        vlc_object_release( p_input );
    }
}

/**
 * Create a subpicture region
 *
 * \param p_this vlc_object_t
 * \param p_fmt the format that this subpicture region should have
 */
277 278 279 280
static void RegionPictureRelease( picture_t *p_pic )
{
    if( p_pic->p_data_orig ) free( p_pic->p_data_orig );
}
281 282 283 284
subpicture_region_t *__spu_CreateRegion( vlc_object_t *p_this,
                                         video_format_t *p_fmt )
{
    subpicture_region_t *p_region = malloc( sizeof(subpicture_region_t) );
Jean-Paul Saman's avatar
Jean-Paul Saman committed
285 286
    if( !p_region ) return NULL;

287
    memset( p_region, 0, sizeof(subpicture_region_t) );
288 289
    p_region->p_next = NULL;
    p_region->p_cache = NULL;
290
    p_region->fmt = *p_fmt;
291
    p_region->psz_text = NULL;
292
    p_region->p_style = NULL;
293 294 295 296 297 298

    if( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') )
        p_fmt->p_palette = p_region->fmt.p_palette =
            malloc( sizeof(video_palette_t) );
    else p_fmt->p_palette = p_region->fmt.p_palette = NULL;

299
    p_region->picture.p_data_orig = NULL;
300 301

    if( p_fmt->i_chroma == VLC_FOURCC('T','E','X','T') ) return p_region;
302 303 304 305 306 307 308

    vout_AllocatePicture( p_this, &p_region->picture, p_fmt->i_chroma,
                          p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );

    if( !p_region->picture.i_planes )
    {
        free( p_region );
Jean-Paul Saman's avatar
Jean-Paul Saman committed
309
        if( p_fmt->p_palette ) free( p_fmt->p_palette );
310 311 312
        return NULL;
    }

313 314
    p_region->picture.pf_release = RegionPictureRelease;

315 316 317
    return p_region;
}

318 319 320 321 322 323 324 325 326 327 328 329
/**
 * Make a subpicture region from an existing picture_t
 *
 * \param p_this vlc_object_t
 * \param p_fmt the format that this subpicture region should have
 * \param p_pic a pointer to the picture creating the region (not freed)
 */
subpicture_region_t *__spu_MakeRegion( vlc_object_t *p_this,
                                       video_format_t *p_fmt,
                                       picture_t *p_pic )
{
    subpicture_region_t *p_region = malloc( sizeof(subpicture_region_t) );
330
    (void)p_this;
331
    if( !p_region ) return NULL;
332 333 334 335 336
    memset( p_region, 0, sizeof(subpicture_region_t) );
    p_region->p_next = 0;
    p_region->p_cache = 0;
    p_region->fmt = *p_fmt;
    p_region->psz_text = 0;
337
    p_region->p_style = NULL;
338 339 340 341 342 343 344 345 346 347 348 349

    if( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') )
        p_fmt->p_palette = p_region->fmt.p_palette =
            malloc( sizeof(video_palette_t) );
    else p_fmt->p_palette = p_region->fmt.p_palette = NULL;

    memcpy( &p_region->picture, p_pic, sizeof(picture_t) );
    p_region->picture.pf_release = RegionPictureRelease;

    return p_region;
}

350 351 352 353 354 355 356 357 358
/**
 * Destroy a subpicture region
 *
 * \param p_this vlc_object_t
 * \param p_region the subpicture region to destroy
 */
void __spu_DestroyRegion( vlc_object_t *p_this, subpicture_region_t *p_region )
{
    if( !p_region ) return;
359 360
    if( p_region->picture.pf_release )
        p_region->picture.pf_release( &p_region->picture );
361
    if( p_region->fmt.p_palette ) free( p_region->fmt.p_palette );
362
    if( p_region->p_cache ) __spu_DestroyRegion( p_this, p_region->p_cache );
363 364 365

    if( p_region->psz_text )
        free( p_region->psz_text );
366 367
    if( p_region->psz_html )
        free( p_region->psz_html );
368
    //free( p_region->p_style ); FIXME --fenrir plugin does not allocate the memory for it. I think it might lead to segfault, video renderer can live longer than the decoder
369 370
    free( p_region );
}
Sam Hocevar's avatar
 
Sam Hocevar committed
371

372
/**
373
 * Display a subpicture
374
 *
Sam Hocevar's avatar
 
Sam Hocevar committed
375 376
 * Remove the reservation flag of a subpicture, which will cause it to be
 * ready for display.
377
 * \param p_spu the subpicture unit object
378 379
 * \param p_subpic the subpicture to display
 */
380
void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
Sam Hocevar's avatar
 
Sam Hocevar committed
381 382 383 384
{
    /* Check if status is valid */
    if( p_subpic->i_status != RESERVED_SUBPICTURE )
    {
385 386
        msg_Err( p_spu, "subpicture %p has invalid status #%d",
                 p_subpic, p_subpic->i_status );
Sam Hocevar's avatar
 
Sam Hocevar committed
387 388
    }

389 390
    /* Remove reservation flag */
    p_subpic->i_status = READY_SUBPICTURE;
Sam Hocevar's avatar
 
Sam Hocevar committed
391

392
    if( p_subpic->i_channel == DEFAULT_CHAN )
Sam Hocevar's avatar
 
Sam Hocevar committed
393
    {
394 395 396
        p_subpic->i_channel = 0xFFFF;
        spu_Control( p_spu, SPU_CHANNEL_CLEAR, DEFAULT_CHAN );
        p_subpic->i_channel = DEFAULT_CHAN;
Sam Hocevar's avatar
 
Sam Hocevar committed
397
    }
Sam Hocevar's avatar
 
Sam Hocevar committed
398 399
}

400
/**
401
 * Allocate a subpicture in the spu heap.
402
 *
403
 * This function create a reserved subpicture in the spu heap.
Sam Hocevar's avatar
 
Sam Hocevar committed
404 405 406
 * A null pointer is returned if the function fails. This method provides an
 * already allocated zone of memory in the spu data fields. It needs locking
 * since several pictures can be created by several producers threads.
407
 * \param p_spu the subpicture unit in which to create the subpicture
408 409
 * \return NULL on error, a reserved subpicture otherwise
 */
410
subpicture_t *spu_CreateSubpicture( spu_t *p_spu )
Sam Hocevar's avatar
 
Sam Hocevar committed
411 412
{
    int                 i_subpic;                        /* subpicture index */
413
    subpicture_t *      p_subpic = NULL;            /* first free subpicture */
Sam Hocevar's avatar
 
Sam Hocevar committed
414

415
    /* Get lock */
416
    vlc_mutex_lock( &p_spu->subpicture_lock );
417

Sam Hocevar's avatar
 
Sam Hocevar committed
418 419 420
    /*
     * Look for an empty place
     */
421
    p_subpic = NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
422 423
    for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
    {
424
        if( p_spu->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE )
Sam Hocevar's avatar
 
Sam Hocevar committed
425 426
        {
            /* Subpicture is empty and ready for allocation */
427 428
            p_subpic = &p_spu->p_subpicture[i_subpic];
            p_spu->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
429
            break;
Sam Hocevar's avatar
 
Sam Hocevar committed
430 431 432
        }
    }

433 434
    /* If no free subpicture could be found */
    if( p_subpic == NULL )
Sam Hocevar's avatar
 
Sam Hocevar committed
435
    {
436 437
        msg_Err( p_spu, "subpicture heap is full" );
        vlc_mutex_unlock( &p_spu->subpicture_lock );
438
        return NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
439
    }
Sam Hocevar's avatar
 
Sam Hocevar committed
440

441
    /* Copy subpicture information, set some default values */
442 443 444
    memset( p_subpic, 0, sizeof(subpicture_t) );
    p_subpic->i_status   = RESERVED_SUBPICTURE;
    p_subpic->b_absolute = VLC_TRUE;
445
    p_subpic->b_pausable = VLC_FALSE;
446
    p_subpic->b_fade     = VLC_FALSE;
447
    p_subpic->i_alpha    = 0xFF;
448 449 450 451
    p_subpic->p_region   = NULL;
    p_subpic->pf_render  = NULL;
    p_subpic->pf_destroy = NULL;
    p_subpic->p_sys      = NULL;
452
    vlc_mutex_unlock( &p_spu->subpicture_lock );
Sam Hocevar's avatar
 
Sam Hocevar committed
453

454
    p_subpic->pf_create_region = __spu_CreateRegion;
455
    p_subpic->pf_make_region = __spu_MakeRegion;
456
    p_subpic->pf_destroy_region = __spu_DestroyRegion;
457

458
    return p_subpic;
Sam Hocevar's avatar
 
Sam Hocevar committed
459 460
}

461 462 463
/**
 * Remove a subpicture from the heap
 *
Sam Hocevar's avatar
 
Sam Hocevar committed
464 465 466
 * This function frees a previously reserved subpicture.
 * It is meant to be used when the construction of a picture aborted.
 * This function does not need locking since reserved subpictures are ignored
467
 * by the spu.
468
 */
469
void spu_DestroySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
Sam Hocevar's avatar
 
Sam Hocevar committed
470
{
Gildas Bazin's avatar
 
Gildas Bazin committed
471
    /* Get lock */
472
    vlc_mutex_lock( &p_spu->subpicture_lock );
Gildas Bazin's avatar
 
Gildas Bazin committed
473 474 475 476

    /* There can be race conditions so we need to check the status */
    if( p_subpic->i_status == FREE_SUBPICTURE )
    {
477
        vlc_mutex_unlock( &p_spu->subpicture_lock );
Gildas Bazin's avatar
 
Gildas Bazin committed
478 479 480
        return;
    }

481 482 483 484
    /* Check if status is valid */
    if( ( p_subpic->i_status != RESERVED_SUBPICTURE )
           && ( p_subpic->i_status != READY_SUBPICTURE ) )
    {
485
        msg_Err( p_spu, "subpicture %p has invalid status %d",
486 487 488
                         p_subpic, p_subpic->i_status );
    }

489 490 491 492
    while( p_subpic->p_region )
    {
        subpicture_region_t *p_region = p_subpic->p_region;
        p_subpic->p_region = p_region->p_next;
493
        spu_DestroyRegion( p_spu, p_region );
494 495
    }

496 497 498 499 500 501
    if( p_subpic->pf_destroy )
    {
        p_subpic->pf_destroy( p_subpic );
    }

    p_subpic->i_status = FREE_SUBPICTURE;
Gildas Bazin's avatar
 
Gildas Bazin committed
502

503
    vlc_mutex_unlock( &p_spu->subpicture_lock );
Sam Hocevar's avatar
 
Sam Hocevar committed
504 505 506
}

/*****************************************************************************
507
 * spu_RenderSubpictures: render a subpicture list
Sam Hocevar's avatar
 
Sam Hocevar committed
508
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
509
 * This function renders all sub picture units in the list.
Sam Hocevar's avatar
 
Sam Hocevar committed
510
 *****************************************************************************/
511 512 513
void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
                            picture_t *p_pic_dst, picture_t *p_pic_src,
                            subpicture_t *p_subpic,
514
                            int i_scale_width_orig, int i_scale_height_orig )
Sam Hocevar's avatar
 
Sam Hocevar committed
515
{
516 517
    int i_source_video_width;
    int i_source_video_height;
518

Gildas Bazin's avatar
 
Gildas Bazin committed
519
    /* Get lock */
520
    vlc_mutex_lock( &p_spu->subpicture_lock );
Gildas Bazin's avatar
 
Gildas Bazin committed
521

522 523 524 525 526 527 528 529
    if( i_scale_width_orig <= 0 )
        i_scale_width_orig = 1;
    if( i_scale_height_orig <= 0 )
        i_scale_height_orig = 1;

    i_source_video_width  = p_fmt->i_width  * 1000 / i_scale_width_orig;
    i_source_video_height = p_fmt->i_height * 1000 / i_scale_height_orig;

Gildas Bazin's avatar
 
Gildas Bazin committed
530
    /* Check i_status again to make sure spudec hasn't destroyed the subpic */
531
    while( ( p_subpic != NULL ) && ( p_subpic->i_status != FREE_SUBPICTURE ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
532
    {
533
        subpicture_region_t *p_region = p_subpic->p_region;
534 535 536 537 538
        int pi_scale_width[ SCALE_SIZE ];
        int pi_scale_height[ SCALE_SIZE ];
        int pi_subpic_x[ SCALE_SIZE ];
        int k;

539 540 541 542 543 544 545 546 547 548 549
        /* If the source video and subtitles stream agree on the size of
         * the video then disregard all further references to the subtitle
         * stream.
         */
        if( ( i_source_video_height == p_subpic->i_original_picture_height ) &&
            ( i_source_video_width  == p_subpic->i_original_picture_width ) )
        {
            p_subpic->i_original_picture_height = 0;
            p_subpic->i_original_picture_width = 0;
        }

550
        for( k = 0; k < SCALE_SIZE ; k++ )
551
            pi_subpic_x[ k ] = p_subpic->i_x;
552

553
        /* Load the blending module */
554
        if( !p_spu->p_blend && p_region )
555
        {
556
            p_spu->p_blend = vlc_object_create( p_spu, VLC_OBJECT_FILTER );
557 558 559 560 561 562
            vlc_object_attach( p_spu->p_blend, p_spu );
            p_spu->p_blend->fmt_out.video.i_x_offset =
                p_spu->p_blend->fmt_out.video.i_y_offset = 0;
            p_spu->p_blend->fmt_out.video.i_aspect = p_fmt->i_aspect;
            p_spu->p_blend->fmt_out.video.i_chroma = p_fmt->i_chroma;

563 564
            /* The blend module will be loaded when needed with the real
            * input format */
565 566
            memset( &p_spu->p_blend->fmt_in, 0, sizeof(p_spu->p_blend->fmt_in) );
            p_spu->p_blend->p_module = NULL;
567
        }
568

569 570 571 572 573
        /* Load the text rendering module; it is possible there is a
         * text region somewhere in the subpicture other than the first
         * element in the region list, so just load it anyway as we'll
         * probably want it sooner or later. */
        if( !p_spu->p_text && p_region )
574
        {
575 576
            char *psz_modulename = NULL;

577
            p_spu->p_text = vlc_object_create( p_spu, VLC_OBJECT_FILTER );
578 579 580 581
            vlc_object_attach( p_spu->p_text, p_spu );

            p_spu->p_text->fmt_out.video.i_width =
                p_spu->p_text->fmt_out.video.i_visible_width =
582
                p_fmt->i_width;
583 584
            p_spu->p_text->fmt_out.video.i_height =
                p_spu->p_text->fmt_out.video.i_visible_height =
585
                p_fmt->i_height;
586

587 588
            p_spu->p_text->pf_sub_buffer_new = spu_new_buffer;
            p_spu->p_text->pf_sub_buffer_del = spu_del_buffer;
589 590 591 592 593

            psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
            if( psz_modulename && *psz_modulename )
            {
                p_spu->p_text->p_module =
594 595
                    module_Need( p_spu->p_text, "text renderer",
                                 psz_modulename, VLC_TRUE );
596 597 598 599 600 601 602
            }
            if( !p_spu->p_text->p_module )
            {
                p_spu->p_text->p_module =
                    module_Need( p_spu->p_text, "text renderer", 0, 0 );
            }
            if( psz_modulename ) free( psz_modulename );
603
        }
604

605
        if( p_spu->p_text )
606
        {
607 608
            subpicture_region_t *p_text_region = p_subpic->p_region;

609 610 611 612 613 614 615
            /* Only overwrite the size fields if the region is still in
             * pre-rendered TEXT format. We have to traverse the subregion
             * list because if more than one subregion is present, the text
             * region isn't guarentteed to be the first in the list, and
             * only text regions use this flag. All of this effort assists
             * with the rescaling of text that has been rendered at native
             * resolution, rather than video resolution.
616 617
             */
            while( p_text_region &&
618
                   ( p_text_region->fmt.i_chroma != VLC_FOURCC('T','E','X','T') ) )
619
            {
620
                p_text_region = p_text_region->p_next;
621
            }
622

623
            if( p_text_region &&
624
                ( ( p_text_region->i_align & SUBPICTURE_RENDERED ) == 0 ) )
625
            {
626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644
                if( (p_subpic->i_original_picture_height > 0) &&
                    (p_subpic->i_original_picture_width  > 0) )
                {
                    p_spu->p_text->fmt_out.video.i_width =
                        p_spu->p_text->fmt_out.video.i_visible_width =
                        p_subpic->i_original_picture_width;
                    p_spu->p_text->fmt_out.video.i_height =
                        p_spu->p_text->fmt_out.video.i_visible_height =
                        p_subpic->i_original_picture_height;
                }
                else
                {
                    p_spu->p_text->fmt_out.video.i_width =
                        p_spu->p_text->fmt_out.video.i_visible_width =
                        p_fmt->i_width;
                    p_spu->p_text->fmt_out.video.i_height =
                        p_spu->p_text->fmt_out.video.i_visible_height =
                        p_fmt->i_height;
                }
645
            }
646
        }
647

648 649
        pi_scale_width[ SCALE_DEFAULT ]  = i_scale_width_orig;
        pi_scale_height[ SCALE_DEFAULT ] = i_scale_height_orig;
650

651 652 653 654 655 656 657
        if( p_spu->p_text )
        {
            pi_scale_width[ SCALE_TEXT ]     = ( p_fmt->i_width * 1000 ) /
                                          p_spu->p_text->fmt_out.video.i_width;
            pi_scale_height[ SCALE_TEXT ]    = ( p_fmt->i_height * 1000 ) /
                                          p_spu->p_text->fmt_out.video.i_height;
        }
658 659 660 661 662 663 664 665 666
        /* If we have an explicit size plane to render to, then turn off
         * the fontsize rescaling.
         */
        if( (p_subpic->i_original_picture_height > 0) &&
            (p_subpic->i_original_picture_width  > 0) )
        {
            i_scale_width_orig  = 1000;
            i_scale_height_orig = 1000;
        }
667 668

        for( k = 0; k < SCALE_SIZE ; k++ )
669
        {
670 671 672
            /* Case of both width and height being specified has been dealt
             * with above by instead rendering to an output pane of the
             * explicit dimensions specified - we don't need to scale it.
673
             */
674
            if( (p_subpic->i_original_picture_height > 0) &&
Jean-Paul Saman's avatar
Jean-Paul Saman committed
675
                (p_subpic->i_original_picture_width <= 0) )
676 677 678 679 680 681
            {
                pi_scale_height[ k ] = pi_scale_height[ k ] * i_source_video_height /
                                 p_subpic->i_original_picture_height;
                pi_scale_width[ k ]  = pi_scale_width[ k ]  * i_source_video_height /
                                 p_subpic->i_original_picture_height;
            }
682
        }
683

684 685
        /* Set default subpicture aspect ratio */
        if( p_region && p_region->fmt.i_aspect &&
686
            ( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den ) )
687
        {
688 689 690 691
            p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
            p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
        }
        if( p_region &&
692
            ( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den ) )
693 694 695 696
        {
            p_region->fmt.i_sar_den = p_fmt->i_sar_den;
            p_region->fmt.i_sar_num = p_fmt->i_sar_num;
        }
697

698
        /* Take care of the aspect ratio */
699
        if( p_region &&
700 701
            ( ( p_region->fmt.i_sar_num * p_fmt->i_sar_den ) !=
              ( p_region->fmt.i_sar_den * p_fmt->i_sar_num ) ) )
702
        {
703
            for( k = 0; k < SCALE_SIZE ; k++ )
704 705 706 707 708 709
            {
                pi_scale_width[ k ] = pi_scale_width[ k ] *
                    (int64_t)p_region->fmt.i_sar_num * p_fmt->i_sar_den /
                    p_region->fmt.i_sar_den / p_fmt->i_sar_num;
                pi_subpic_x[ k ] = p_subpic->i_x * pi_scale_width[ k ] / 1000;
            }
710 711
        }

712
        /* Load the scaling module */
713
        if( !p_spu->p_scale &&
714 715 716 717
           ((((pi_scale_width[ SCALE_TEXT ]    > 0)     || (pi_scale_height[ SCALE_TEXT ]    > 0)) &&
             ((pi_scale_width[ SCALE_TEXT ]    != 1000) || (pi_scale_height[ SCALE_TEXT ]    != 1000))) ||
            (((pi_scale_width[ SCALE_DEFAULT ] > 0)     || (pi_scale_height[ SCALE_DEFAULT ] > 0)) &&
             ((pi_scale_width[ SCALE_DEFAULT ] != 1000) || (pi_scale_height[ SCALE_DEFAULT ] != 1000)))) )
718 719 720 721 722 723
        {
            p_spu->p_scale = vlc_object_create( p_spu, VLC_OBJECT_FILTER );
            vlc_object_attach( p_spu->p_scale, p_spu );
            p_spu->p_scale->fmt_out.video.i_chroma =
                p_spu->p_scale->fmt_in.video.i_chroma =
                    VLC_FOURCC('Y','U','V','P');
724 725
            /* FIXME: We'll also be using it for YUVA and RGBA blending ... */

726 727 728 729 730 731 732 733 734
            p_spu->p_scale->fmt_in.video.i_width =
                p_spu->p_scale->fmt_in.video.i_height = 32;
            p_spu->p_scale->fmt_out.video.i_width =
                p_spu->p_scale->fmt_out.video.i_height = 16;

            p_spu->p_scale->pf_vout_buffer_new = spu_new_video_buffer;
            p_spu->p_scale->pf_vout_buffer_del = spu_del_video_buffer;
            p_spu->p_scale->p_module =
                module_Need( p_spu->p_scale, "video filter2", 0, 0 );
735 736
        }

737
        while( p_region )
738
        {
739 740
            video_format_t orig_fmt = p_region->fmt;
            vlc_bool_t b_rerender_text = VLC_FALSE;
741
            int i_fade_alpha = 255;
742 743 744 745 746
            int i_x_offset;
            int i_y_offset;
            int i_scale_idx   = SCALE_DEFAULT;
            int i_inv_scale_x = 1000;
            int i_inv_scale_y = 1000;
747

748 749
            if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
            {
750
                if( p_spu->p_text && p_spu->p_text->p_module )
751
                {
752 753
                    vlc_value_t  val;

Antoine Cellerier's avatar
Antoine Cellerier committed
754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771
                    /* Setup 3 variables which can be used to render
                     * time-dependent text (and effects). The first indicates
                     * the total amount of time the text will be on screen,
                     * the second the amount of time it has already been on
                     * screen (can be a negative value as text is layed out
                     * before it is rendered) and the third is a feedback
                     * variable from the renderer - if the renderer sets it
                     * then this particular text is time-dependent, eg. the
                     * visual progress bar inside the text in karaoke and the
                     * text needs to be rendered multiple times in order for
                     * the effect to work - we therefore need to return the
                     * region to its original state at the end of the loop,
                     * instead of leaving it in YUVA or YUVP.
                     * Any renderer which is unaware of how to render
                     * time-dependent text can happily ignore the variables
                     * and render the text the same as usual - it should at
                     * least show up on screen, but the effect won't change
                     * the text over time.
772 773 774 775 776 777 778 779 780 781 782 783 784
                     */

                    var_Create( p_spu->p_text, "spu-duration", VLC_VAR_TIME );
                    val.i_time = p_subpic->i_stop - p_subpic->i_start;
                    var_Set( p_spu->p_text, "spu-duration", val );

                    var_Create( p_spu->p_text, "spu-elapsed", VLC_VAR_TIME );
                    val.i_time = mdate() - p_subpic->i_start;
                    var_Set( p_spu->p_text, "spu-elapsed", val );

                    var_Create( p_spu->p_text, "text-rerender", VLC_VAR_BOOL );
                    var_SetBool( p_spu->p_text, "text-rerender", VLC_FALSE );

785 786 787 788
                    var_Create( p_spu->p_text, "scale", VLC_VAR_INTEGER );
                    var_SetInteger( p_spu->p_text, "scale",
                              __MIN(i_scale_width_orig, i_scale_height_orig) );

789 790 791 792 793 794 795 796
                    if( p_spu->p_text->pf_render_html && p_region->psz_html )
                    {
                        p_spu->p_text->pf_render_html( p_spu->p_text,
                                                       p_region, p_region );
                    }
                    else if( p_spu->p_text->pf_render_text )
                    {
                        p_spu->p_text->pf_render_text( p_spu->p_text,
Antoine Cellerier's avatar
Antoine Cellerier committed
797
                                                       p_region, p_region );
798
                    }
799 800 801 802 803
                    b_rerender_text = var_GetBool( p_spu->p_text, "text-rerender" );

                    var_Destroy( p_spu->p_text, "spu-duration" );
                    var_Destroy( p_spu->p_text, "spu-elapsed" );
                    var_Destroy( p_spu->p_text, "text-rerender" );
804
                    var_Destroy( p_spu->p_text, "scale" );
805
                }
806
                p_region->i_align |= SUBPICTURE_RENDERED;
807
            }
808

809 810 811 812 813 814 815 816 817
            if( p_region->i_align & SUBPICTURE_RENDERED )
            {
                i_scale_idx   = SCALE_TEXT;
                i_inv_scale_x = i_scale_width_orig;
                i_inv_scale_y = i_scale_height_orig;
            }

            i_x_offset = (p_region->i_x + pi_subpic_x[ i_scale_idx ]) * i_inv_scale_x / 1000;
            i_y_offset = (p_region->i_y + p_subpic->i_y) * i_inv_scale_y / 1000;
818

819
            /* Force palette if requested */
Jean-Paul Saman's avatar
Jean-Paul Saman committed
820
            if( p_spu->b_force_palette &&
821
                ( VLC_FOURCC('Y','U','V','P') == p_region->fmt.i_chroma ) )
822
            {
823 824
                memcpy( p_region->fmt.p_palette->palette,
                        p_spu->palette, 16 );
825 826 827
            }

            /* Scale SPU if necessary */
828
            if( p_region->p_cache &&
829
                ( p_region->fmt.i_chroma != VLC_FOURCC('T','E','X','T') ) )
830
            {
831
                if( pi_scale_width[ i_scale_idx ] * p_region->fmt.i_width / 1000 !=
832
                    p_region->p_cache->fmt.i_width ||
833
                    pi_scale_height[ i_scale_idx ] * p_region->fmt.i_height / 1000 !=
834 835 836 837 838 839
                    p_region->p_cache->fmt.i_height )
                {
                    p_subpic->pf_destroy_region( VLC_OBJECT(p_spu),
                                                 p_region->p_cache );
                    p_region->p_cache = 0;
                }
840
            }
841

842
            if( ( ( pi_scale_width[ i_scale_idx ] != 1000 ) ||
843
                  ( pi_scale_height[ i_scale_idx ] != 1000 ) ) &&
844
                ( ( pi_scale_width[ i_scale_idx ] > 0 ) ||
845 846 847
                  ( pi_scale_height[ i_scale_idx ] > 0 ) ) &&
                p_spu->p_scale && !p_region->p_cache &&
                ( p_region->fmt.i_chroma != VLC_FOURCC('T','E','X','T') ) )
848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865
            {
                picture_t *p_pic;

                p_spu->p_scale->fmt_in.video = p_region->fmt;
                p_spu->p_scale->fmt_out.video = p_region->fmt;

                p_region->p_cache =
                    p_subpic->pf_create_region( VLC_OBJECT(p_spu),
                        &p_spu->p_scale->fmt_out.video );
                if( p_spu->p_scale->fmt_out.video.p_palette )
                    *p_spu->p_scale->fmt_out.video.p_palette =
                        *p_region->fmt.p_palette;
                p_region->p_cache->p_next = p_region->p_next;

                vout_CopyPicture( p_spu, &p_region->p_cache->picture,
                                  &p_region->picture );

                p_spu->p_scale->fmt_out.video.i_width =
866
                    p_region->fmt.i_width * pi_scale_width[ i_scale_idx ] / 1000;
867
                p_spu->p_scale->fmt_out.video.i_visible_width =
868
                    p_region->fmt.i_visible_width * pi_scale_width[ i_scale_idx ] / 1000;
869
                p_spu->p_scale->fmt_out.video.i_height =
870
                    p_region->fmt.i_height * pi_scale_height[ i_scale_idx ] / 1000;
871
                p_spu->p_scale->fmt_out.video.i_visible_height =
872
                    p_region->fmt.i_visible_height * pi_scale_height[ i_scale_idx ] / 1000;
873
                p_region->p_cache->fmt = p_spu->p_scale->fmt_out.video;
874 875
                p_region->p_cache->i_x = p_region->i_x * pi_scale_width[ i_scale_idx ] / 1000;
                p_region->p_cache->i_y = p_region->i_y * pi_scale_height[ i_scale_idx ] / 1000;
Laurent Aimar's avatar
Laurent Aimar committed
876
                p_region->p_cache->i_align = p_region->i_align;
877 878 879 880 881 882 883 884 885 886 887

                p_pic = p_spu->p_scale->pf_video_filter(
                                 p_spu->p_scale, &p_region->p_cache->picture );
                if( p_pic )
                {
                    picture_t p_pic_tmp = p_region->p_cache->picture;
                    p_region->p_cache->picture = *p_pic;
                    *p_pic = p_pic_tmp;
                    free( p_pic );
                }
            }
888 889 890 891 892 893 894

            if( ( ( pi_scale_width[ i_scale_idx ] != 1000 ) ||
                  ( pi_scale_height[ i_scale_idx ] != 1000 ) ) &&
                ( ( pi_scale_width[ i_scale_idx ] > 0 ) ||
                  ( pi_scale_height[ i_scale_idx ] > 0 ) ) &&
                p_spu->p_scale && p_region->p_cache &&
                ( p_region->fmt.i_chroma != VLC_FOURCC('T','E','X','T') )  )
895 896 897 898
            {
                p_region = p_region->p_cache;
            }

Laurent Aimar's avatar
Laurent Aimar committed
899
            if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
900 901
            {
                i_y_offset = p_fmt->i_height - p_region->fmt.i_height -
902
                    (p_subpic->i_y + p_region->i_y) * i_inv_scale_y / 1000;
903
            }
Laurent Aimar's avatar
Laurent Aimar committed
904
            else if ( !(p_region->i_align & SUBPICTURE_ALIGN_TOP) )
905 906 907 908
            {
                i_y_offset = p_fmt->i_height / 2 - p_region->fmt.i_height / 2;
            }

Laurent Aimar's avatar
Laurent Aimar committed
909
            if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
910 911
            {
                i_x_offset = p_fmt->i_width - p_region->fmt.i_width -
912 913
                    (pi_subpic_x[ i_scale_idx ] + p_region->i_x)
                    * i_inv_scale_x / 1000;
914
            }
Laurent Aimar's avatar
Laurent Aimar committed
915
            else if ( !(p_region->i_align & SUBPICTURE_ALIGN_LEFT) )
916 917 918 919
            {
                i_x_offset = p_fmt->i_width / 2 - p_region->fmt.i_width / 2;
            }

920 921
            if( p_subpic->b_absolute )
            {